JSON解析。價值不在公里

Question

我是新的程序員。我使用谷歌矩陣API。我得到以下回應，我想獲取「文本」：「1686公里」。我正在使用Json解析。由於

"destination_addresses" : [ "San Francisco, Californie, États-Unis" ], 

    "origin_addresses" : [ "Vancouver, BC, Canada" ], 

    "rows" : [ 

     { 

     "elements" : [ 

      { 

       "distance" : { 

        "text" : "1 686 km", 

        "value" : 1685690 

       }, 

       "duration" : { 

        "text" : "3 jours 21 heures", 

        "value" : 336418 

       }, 

       "status" : "OK" 

      } 
     ] 
     } 
    ], 
    "status" : "OK" 
} 



    SBJsonParser *json = [[SBJsonParser new] autorelease]; 

    NSError *jsonError; 

    parsedJSON = [json objectWithString:data error:&jsonError]; 

Answer 1

好，parsedJSON將是一個NSDictionary這樣：

NSArray *rows = [parsedJSON objectForKey:@"rows"]; 
for (NSDictionary *row in rows) { 
    NSArray *elements = [row objectForKey:@"elements"]; 
    for (NSDictionary *element in elements) { 
     NSDictionary *distance = [element objectForKey:@"distance"]; 
     NSString *kmDistance = [distance objectForKey:@"text"]; ///< That's what you wanted 
    } 
}